Bio 2024 Unit 2 Test Study Guide/Remediation

1. What are the 3 parts of the cell theory? 

• All living organisms are composed of one or more cells

• A cell is the basic structural and functional unit of living organisms

• All cells arise from pre-existing cells

• The cell is the basic unit of matter

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Determine if the following organism is Unicellular or Multicellular

Groups:

(a) Multicellular

,

(b) Unicellular

• Organisms made of many cells

• One cell organisms

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• All prokaryotes and some eukaryotes

• Most eukaryotes

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Match the characteristics of life

• Made up of one or more cells

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• Process and use energy (metabolism)

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• Can reproduce

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• Maintain homeostasis

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• Universal genetic code

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Match the following characteristics of life

• Grow and develop

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• Respond to stimuli (environment)

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• Can evovle

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Homeostasis for living organisms means...

• The external environment stays the same when internal changes occur

• Water diffuses through the membrane by osmosis

• Concentrations move from high to low

• The internal environment stays the same when external changes occur

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How does an organism respond to a stimulus or a change in the environment?

• By changing its own internal environment

• By ignoring the stimulus

• By moving to a different environment

• By not responding at all

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1. What is the main difference between a prokaryotic cell and a eukaryotic cell?

• Prokaryotic cells are larger than eukaryotic cells
• Prokaryotic cells have a nucleus, while eukaryotic cells do not
• Prokaryotic cells do not have a nucleus, while eukaryotic cells do
• Prokaryotic cells and eukaryotic cells are the same

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What three things do  do prokaryotic and eukaryotic cells have in common?

• DNA, Ribosomes, and Cell Membrane
• Nucleus, Mitochondria, and Cell Wall
• Lysosomes, Golgi Apparatus, and Endoplasmic Reticulum
• Chloroplasts, Vacuoles, and Cytoskeleton

Which three organelles or cell structures are present in plant cells but NOT in animal cells?

• Mitochondria, Ribosomes, Nucleus

• Cell Wall, Chloroplasts, Large Central Vacuole

• Golgi Apparatus, Endoplasmic Reticulum, Lysosomes

• Cytoskeleton, Peroxisomes, Centrioles

What is the function of the cell nucleus?

• Controls the cell's activities
• Produces energy for the cell
• Stores water, food, and waste products
• Protects the cell from its surroundings

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